Before his career as a coach, Van Gaal played as a midfielder for Royal Antwerp, Telstar, Sparta Rotterdam and AZ. He is also a fully qualified gymnastics teacher and has worked as such at high schools during various stages of his career as a semi-professional footballer.[3]

Van Gaal was born in Amsterdam. As a youngster, he started playing for the Amsterdam amateur side RKSV 'De Meer'. At the age of 20, he joined the second team of Ajax, but was never chosen to play in the first team, which at the time boasted players such as Johan Cruyff and Johan Neeskens in the midfield positions. He was loaned to Belgian First Division side Royal Antwerp playing under Guy Thys with whom he was runner-up in the Belgian top division in 1974 and 1975. After four years spent in Belgium, Van Gaal returned to his homeland and made his Eredivisie debut for Telstar under the guidance of manager, Mircea Petescu, whom he followed to Sparta Rotterdam. Van Gaal later joined AZ, where he also became assistant coach in 1986. After a short career at AZ, he returned to Ajax to become Leo Beenhakker's assistant. When Beenhakker left in 1991, Van Gaal took over as manager.[5]

He moved to Barcelona in 1997, taking over from Bobby Robson, and helped the team win two league championships (1997–98, 1998–99) and the Copa del Rey once.[6] Despite this success, he clashed with the media and came under criticism. Van Gaal expressed that it was difficult to implement his football philosophy at Barcelona due to cultural differences, and that he struggled hard as some players were unwilling to follow his lead.[8] His rows with Rivaldo are an example of this: Van Gaal insisted Rivaldo play as a left winger, whereas Rivaldo argued that he wanted to play in the centre, in effect undermining van Gaal.[9]

Van Gaal eventually left the Catalan side on 20 May 2000,[8] days after losing the league title to Deportivo de La Coruña, uttering the immortal line: "Amigos de la prensa. Yo me voy. Felicidades." (Friends of the press. I am leaving. Congratulations.)[5] He returned to the Netherlands to manage the Dutch national team in preparation for the 2002 FIFA World Cup.

Under Van Gaal, the Netherlands started their campaign to qualify for the 2002 FIFA World Cup poorly. Placed in Group 2, an injury-hit side could only manage to secure a late 2–2 draw at home to the Republic of Ireland, having been 2–0 down with 20 minutes to go.[10] A 4–0 win over Cyprus was followed by a 2–0 defeat to Portugal, though the team went on to defeat Spain 2–1 in a friendly at the end of the year.

In 2001, the Netherlands beat Andorra, Cyprus and Estonia, but despite leading group leaders Portugal 2–0 with seven minutes left, drew 2–2 and fell three points behind second-place Ireland, who were unbeaten. When the sides met in Dublin, Van Gaal boasted before the match that his squad was so much more talented, even the Irish fans would want them to qualify. Ireland went down to 10 men after 58 minutes but scored 9 minutes later and won 1–0. The Netherlands fell seven points behind them with two games left to play, meaning that they failed to qualify for the World Cup for the first time since 1986.[11] Van Gaal stepped down as manager on 31 January 2002 to be replaced by Dick Advocaat. After this, speculation began that Van Gaal would succeed Sir Alex Ferguson at Manchester United once Ferguson claimed he would retire that year. According to Van Gaal, Ferguson decided against retiring and the deal fell through.[12]

Van Gaal returned to Barcelona for the start of the 2002–03 season on a contract until June 2005, but results were inconsistent. The club won a record-equalling ten successive matches in the Champions League but struggled in La Liga. After four wins, four draws and three defeats from their opening 11 league matches, Barcelona lost three matches in a row, to Real Sociedad, relegation-threatened Rayo Vallecano and Sevilla. Two wins and a draw improved things but after successive defeats to Valencia and Celta de Vigo, he left by mutual consent on 28 January 2003 with the club in 12th place, just three points above the relegation zone and 20 points behind leaders Real Sociedad.[5]

His transfers, particularly the signings of goalkeeper Robert Enke, midfielder Gaizka Mendieta and playmaker Juan Román Riquelme, all disappointed.[13] Riquelme had been bought to replace Rivaldo, whom Van Gaal had released on a free transfer despite having a year left on his contract. The two had fallen out during Van Gaal's previous tenure and after Van Gaal returned, Rivaldo said: "Van Gaal is the main cause of my departure. I don't like Van Gaal, and I am sure that he doesn't like me, either."[14] Van Gaal replied that Rivaldo's lack of commitment was the reason he was released, saying that he "was only interested in making more money and playing less. He was chosen as the best player in 1999, but he has not handled himself well since then and has not behaved like a footballer should. He had illusions about Barca and was requesting to take holidays when important Champions League games were approaching. He then hides back home in Brazil. He plays for Brazil like we needed him to at Barcelona, and he has proved this in the World Cup finals, showing he reserved himself for Japan."[15] Rivaldo joined A.C. Milan and won that season's Champions League.

Van Gaal initially announced he would leave AZ at the end of the 2007–08 season due to disappointing results, with the club finishing 11th in the Eredivisie.[20] However, when several players of the AZ squad pointed out that they would like him to stay with AZ, Van Gaal said he would give the players a chance to prove themselves.

AZ started the 2008–09 season with two losses: 2–1 to NAC Breda and 0–3 to ADO Den Haag, but after that the Alkmaar-based club remained unbeaten until 18 April, topping the table ahead of FC Twente and Ajax for the entire season, despite being predicted to finish as low as 13th by pundits.[21] AZ had the best defensive record in the Eredivisie and the second-best goalscoring record, behind Ajax, thanks to its offensive duo of league topscorer Mounir El Hamdaoui and Brazilian Ari. They were crowned league champions on 19 April, one day after AZ suffered an unexpected loss at home to Vitesse, which ended a string of 28 unbeaten games (surpassing the team's 1980–81 record of 25 unbeaten games). That same day Ajax, the only opponent still in theory able to surpass AZ, lost 6–2 to PSV.[22][23]

On 1 July 2009, Van Gaal took over as coach of Bayern Munich.[24][25] Van Gaal referred to his new employer as a "dream club". On 28 August 2009, Van Gaal strengthened his team by signing compatriot Arjen Robben from Real Madrid; this reunited the two, with Van Gaal selecting Robben for his debut in the Netherlands U20 team.[26][27][28]

Van Gaal got off to a poor start as Bayern coach, winning only one of his first four matches in charge, and by November the club was on the brink of a first-roundChampions League exit following two losses to Bordeaux. With Bayer Leverkusen at the top of the Bundesliga, speculation was rampant that Van Gaal was on the brink of a departure from Bayern even earlier than his predecessor Jürgen Klinsmann. Van Gaal, however, kept insisting he is a prozesstrainer meaning that his team needs time to play the way he imagines.[29]

Van Gaal installed many youth players as fixtures in the starting 11, including Thomas Müller and Holger Badstuber, and also converted the winger Bastian Schweinsteiger into a defensive midfielder. A feud with Italian striker Luca Toni, who had played an important role in Bayern's 2007–08league and cupdouble, led to Toni's move to Roma. However, Bayern Munich's form improved with two Champions League victories including an impressive 4–1 victory over Juventus in Turin, which allowed them to progress from their group in second position behind Bordeaux. By March, Bayern had moved to the semi-finals of the DFB-Pokal and were top of the Bundesliga ahead of Leverkusen.

In the Champions League, Bayern won 4–4 on the away goals rule in the quarter-final against Manchester United[33] and 4–0 on aggregate against Olympique Lyonnais in the semi-final,[34] securing them a spot in the final, where Van Gaal was to meet his former pupil and assistant at Barcelona, Internazionale coach José Mourinho.[35] Bayern lost the Champions League final 2–0, handing Inter a first Italian treble and thus failing to secure the treble themselves.[36] On 25 May 2010, Karl-Heinz Rummenigge expressed his desire to extend Van Gaal's contract as the club was very happy with his performance, even though Van Gaal still had one year of his contract to fulfil.[37] At the end of the season, Van Gaal was voted Manager of the Year by the German professional footballers in the yearly poll organized by VDV (professional players' union in Germany) and kicker.[38][39]

Van Gaal's Bayern started the 2010–11 season by winning the DFL-Supercup, which had been officially reinstated after a 14-year absence.[40]

On 7 March 2011, Bayern Munich declared that Van Gaal's contract was to be cancelled after the end of the 2010–11 season.[41] However, he was instead sacked on 10 April 2011 after losing the third place in the Bundesliga.[42]

On 6 July 2012, Van Gaal was presented as the new Netherlands coach.[43] "I am happy that the KNVB approached me," said Van Gaal, who was assisted by former Dutch internationals Danny Blind and Patrick Kluivert, both part of his successful Ajax squad from 1995. "This is the challenge which I have been waiting for."[44]

He led the Netherlands through its 2014 FIFA World Cupqualification group as the team won nine and drew one of their ten matches with a goal difference of 34–5. Qualification was secured with two matches to spare, following a 2–0 away win against Andorra on 10 September 2013.[45]

Despite their successful qualifying campaign, expectations surrounding the Netherlands national team were comparatively low due to mixed pre-tournament friendly performances and the failure of the Dutch squad in Euro 2012 (they suffered 3 defeats out of 3 in the group stages in that tournament). In their first group game at the World Cup, at the Estádio Fonte Nova in Salvador, however, Van Gaal's Dutch team came from behind to defeat reigning champions Spain 5–1.[46] The Dutch victory over Spain was attributed in part to Van Gaal's use of counter-attacking tactics which disrupted the tiki-taka possession-based football of the Spanish team. His use of a 3–5–2 formation was notable, as opposed to the typical Dutch 4–3–3 and this helped the Netherlands to tactically take advantage of Spain's weaknesses. [47] In their next match, the Dutch were trailing 2–1 to Australia in the second half of their second group game, before winning 2–3 with the winning goal from young substitute Memphis Depay.[48]

Ahead of the last game in the group, Van Gaal accused FIFA of "playing tricks" in the scheduling of matches to advantage the home nation, as Brazil were to play their last group match four hours after the Dutch, who they could meet in the Last 16 depending on their result. Brazilian manager Luiz Felipe Scolari reacted by saying "It was FIFA who chose the kick-off time. Some people expressed a view that we were going to choose who we were going to play. Those sorts of comments are either stupid or ill-intentioned". Van Gaal also criticised the referees who had awarded penalties against the Dutch in both of their matches, calling the decisions "unjustified" and "incorrect".[49]

The Dutch won their last group match against Chile 2–0 to advance through as group winners.[50] They then defeated Mexico 2–1 in the round of 16.

During their quarter-final match versus Costa Rica in the World Cup, Van Gaal made the decision to substitute first-choice goalkeeperJasper Cillessen for Tim Krul in the final minute of extra time. This decision paid off as Krul saved two of the Costa Rican penalties, sending the Netherlands through to the semi-finals to face Argentina, which they eventually lost in another penalty shootout. Van Gaal ended his tenure[51] as Netherlands manager on 12 July 2014 when the Dutch beat the hosts Brazil 3–0 in the third/fourth place play-off match with goals from Robin van Persie, Daley Blind and Georginio Wijnaldum.[52]

Van Gaal was confirmed to replace David Moyes as the new manager for Manchester United on 19 May 2014.[53] He signed a three-year contract coming into effect after the 2014 World Cup.[53] Van Gaal named Ryan Giggs as his assistant manager, Marcel Bout as assistant coach, specialising in oppositional scouting, and Frans Hoek as goalkeeping coach.[53]Albert Stuivenberg was appointed as assistant coach.[54] Van Gaal claimed he had inherited a "broken" United squad,[55][56][57] and that he would give youth a chance.[58]Ed Woodward said Van Gaal had "impressed everyone around the club" and that there was "a real positive energy and buzz around the place".[59]

Van Gaal's first signings were midfielder Ander Herrera for £29 million,[60][61] and defender Luke Shaw for £30 million.[62][63] On 26 August he signed Argentine winger Ángel Di María from Real Madrid on a five-year contract, the £59.7 million fee setting a new record for a signing by an English club, and taking the club's summer spending to a reported £130 million.[64] On transfer deadline day, Van Gaal signed Daley Blind from Ajax for a fee of £14 million[65] and was granted an extension to sign Radamel Falcao on loan from AS Monaco for a reported £6 million.[66]

After 10 league matches, United were in ninth place with 13 points and two victories, their worst start to the season since 1986–87 under Ron Atkinson.[74] They were also suffering from injuries, including to new signings Herrera, Rojo and Falcao.[74] Van Gaal reacted to the poor form by saying that it would take three years to take his United team to their full potential.[75]

On 4 February 2015, Van Gaal was charged by The Football Association over comments he made about the referee, saying "Every aspect of a match is against us – the pitch, the referee" during United's goalless draw with Cambridge United.[76] After a requested hearing with the FA, Van Gaal was cleared of his charges, but was warned of future conduct.[77] On 8 February, Van Gaal was criticised by West Ham United manager Sam Allardyce for his long ball tactics after the Hammers conceded a late equaliser to United. Van Gaal responded to the criticism with statistics which seem to show that West Ham have played more long balls than his side.[78][79] His tactics were defended by fellow managers Arsène Wenger and Garry Monk.[80][81]

In his first season, Van Gaal led Manchester United to a fourth place finish, three places and six points higher than the previous season.[82]

The youngest of nine brothers and sisters, Van Gaal was brought up as a Catholic. His father, a salesman, died when Van Gaal was 11. Van Gaal's first wife, Fernanda, with whom he had two daughters, Brenda and Renate, died of pancreatic cancer in 1994.[83]

In 2008, he married his current wife, Truus, with whom he shares a holiday home near Albufeira in the Portuguese Algarve.[84]